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2 years ago

10

True or false: When testing the difference between two population means it is unlikely that one would know the value of the popu

lation variances.

1 answer:

erma4kov [3.2K]2 years ago

3 0

The answer is True
………

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7. The claim that started this investigation was that students majoring in engineering are more likely to be in the marching ban

Genrish500 [490]

Answer:

See explanation below.

$P(M|E) > P(M|O)$

Step-by-step explanation:

Notation

First we need to define the following events:

E = The student is in a major of enginnering

O= The student is in a major different from enfinnering

M= The student is in the marching band

Solution for the problem

For this case we can calculate the following probability:

$P(M|E) =\frac{P(M and E)}{P(E)}$

And that represent the following event: "Given a randomly selected student is an engineering major, what is the probability the student is in the marching band"

And the probability that need to calculate to compare is this one:

$P(M|O) =\frac{P(M and O)}{P(O)}$

And that represent the following event: "Given a randomly selected student is NOT an engineering major, what is the probability the student is in the marching band"

And if the claim is satisfied we need to see this:

$P(M|E) > P(M|O)$

8 0

4 years ago

The sum of two numbers is 26. One number is<br> 9 more than the other one. Find the numbers.

rusak2 [61]

Answer:

Step-by-step explanation:

x+y=26

x-y=9

by process of elemination

2x=35

x=17.5

17.5+y=26

y=8.5

3 0

3 years ago

How do you find the square root of 2809

Hunter-Best [27]

If this is greater than the first part of the number called by the spectator (i.e., ignoring the last two digits), then the last digit of your answer is the lower of the two possible values. Otherwise the last digit is the higher value. For example if the number called is 2809, the square root could be either 53 or 57.

4 0

3 years ago

Read 2 more answers

This pattern follows the rule divide by 2, then add 8. What are the next two numbers?

krok68 [10]

Answer:

32, 24

Step-by-step explanation:

48 divided by 2 is 24 plus 8 is 32 then divide by 2 get 16 plus 8 is 24

3 0

3 years ago

Read 2 more answers

What is the interquartile range of the data? 120, 140, 150, 195, 203, 226, 245, 280 235.5

zheka24 [161]

For the first one it's 90.5, I know cause I just took the test and it's right. The second one I'm not sure..

5 0

4 years ago